MANET is infrastructure less network and the routing protocol in MANET is not designed specifically with dynamic, self-starting behaviour required for wireless networks. Each and every node in MANET acts as a forward and receiver node. Performance of most of the protocols is not encouraging in a highly dynamic interconnection topology. In this paper, a reliable broadcast approach for MANET is proposed, which improves the transmission rate. The MANET is considered with asymmetric characteristics, where the source and forwarding nodes have different properties. In addition, there exists a non-forwarding node, which is a downstream node and never forwards a packet. The status of each node is dynamically changes and thus the topology of the network also dynamic. In this work, the number of redundant transmission is minimized by creating less number of forwarding nodes. The forwarded packet is considered as acknowledgements and the non-forwarding nodes explicitly send the acknowledgements to the source. The performance of the proposed approach is evaluated in NS2 environment. Since the proposed approach reduces the flooding, we have considered functionality of the proposed approach with AODV variants. The effect of network density on the overhead and collision rate is considered for performance evaluation. The performance is compared with the AODV variants found that the proposed approach outperforms all the variants.
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